Demonstration model of Philpp Matthäus Hahn's calculator. This video shows how addition and multiplication is performed. For more information about this type...
Demonstration of an 18th century brass hand cranked mechanical calculator, maybe a forerunner of the Curta. Very nice. I like the music too. Very dissonant for something that old, if it’s from then. I wonder what it is.
Demonstration of an 18th century brass hand cranked mechanical calculator, maybe a forerunner of the Curta. Very nice. I like the music too. Very dissonant for something that old, if it’s from then. I wonder what it is.